A plea to reduce social inequality has come from media mogul Rupert Murdoch a successful Australian business person in an outspoken contribution to the debate over Wealth Desparity. More surprising is that he made the appeal to a top-level meeting of G20 finance ministers and central bankers in Washington DC at the request of Australian Treasurer Joe Hockey. He warned them their policies have caused a “massive shift” in societies to benefit the super-rich with a legacy of social polarisation. In speech…